Begulatob valve



G. H. FOX. REGULATOR VALVE.

j Y No. 48,166. Patenteduune13,1865" Wlassesf y l fnv/@725mm GEO ' intenciones este l Y i i.'

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To all achetait may 1- -Be itknown that I., Geenen H. FOX, cr'Boston, in the county of Su'ollr ane State'oihlassachusetts, have inventori an improved Regu-P later-Valve; end-li do hereby declarethat the following, taken in connection withthc drawing which accompanies and forms part oi this specification, isa description ot my invention.

sucientto enable those skilled in the .artto practice ln the'employmentoisteanljblowers in connecton with and 'to-increase the draft el' furhaces of'steam-boilersnnuch diculty is exp perienccd in regulating the pressure of the steam-jets. f It' the cock is open too widethe pressure of steam inthe boiler will be raised too high., and if not open suiiciently the pressure will b'e much reduceclfthereby requiring the engineeror iireman tobe constantly on the alert to keep it at the proper point.V

.The object of my invention is to remedythis liflicnltyby the employment of e steam-regulater, ,and it is. this construction and adaptation that constitute my invention, though it will be obvious Vthat the .valve may be ein` l ployed' in other similar circumstances where it may he necessary to automatically regulate the pressure of the/steam at n. given' point of delivery.

lThe drawing represents a steam cock or A valve embodyingmy invention, being a view partly in clevationand partly in section, as

will be readily understood frominspection.

c denotes the ana-in.chambcrof-thecock,

into which opens the steam-boiler 'pipe b; o, V the Veduotionchsnxber leading into the steamblower pipe d.

e is the valve by which com mnnicntion.be-A

tween heinduction and educt ion pipe is opened or closed. f This valve isxed upon a stem,f, sliding in a screw-cap, g,.at itslower end and in a hollow'screw, h, at its npperend.

Atthe upperlpartol' the chamber a is "a diaphragm ordisk spring, c', fixed upon the stem f and extending across the top of thechaniber c, there being a space, lc, above this diaphragm formed by a.chamberedcap,` l. Over the diaphragm and resting upon it or upon a shoulder or. collar formed on the stemis a spring, m,' surrounding the stem j', pressure? being brought to-bearnpon'this spring by the screwvhfwhich bears nponthe top of the spring or. upon a loose ringer washer .placed on the spring.' By feeding this screw up ordown it -willbe obyionsthat resistance tothe'upward movementof the diaphragm may be'diminished or increased at pleasure. A screw,l n, at'thebottomjof the cock serves to carry the valve against its sent, to shut oli' communica/tion between the inlet. and outlet chambers.

In the-use ofthe invention the screw n is l tur-ned so as to allow the valve-to drop down from-its seat tothe extent required.4 lf, new, the-valve be'opened it will be evident that the pressure, upon the dipln.af,1 n1l maybe so regulated by the sereni? lttfhat when `the pressure oi' the' steam lrises above e. certain point the diaphragm will be forced up thereby and will Vshut oli' the steam from' the @duction-chamber, and tha-tas this steampressure diminishestho diaphragm will again descend, opening` the' valve, thus automatically regulating the current of steam through the blower-pipe at any required pressureof the steam.

thestcnm entirely thevalvo is' raised by the screw 'nf-the parts being then in position'g-.as

seen in the drawing. Bythese means it will' be obvious that no ,attention is requiredin regulating the valve other than 'that of such occasional adjustment as may be necessary ueder Vsuoli uniform changes of pressure eslmt)I bei-nt dierent' times .required in the notion of the blower upon the fire. This change 0f pressure, however, is never created, withthis invention in the blower, except by the intelligence ofthe attendant, the vvalve.ilaseli inn.intaining `n. uniform .pressure in the blower (according as it may 'be"adjusted) whatever. may be the pressure from the boiler.

I claim ranged. to ODQrate together @and with reference 'to each other, substan'tiallyas set forth.

VIn witness whereo'I have hereunto set' my hand this 7th day of April, A. D. 1865. GEU. H. FOX.

lWitnesses:

FRANCIS Groom),` W.. B. GLEASQN.

To shutioil The combination of the valve e, diaphragm y i, and inlet and outlet chambers, when ar, 

